Telephone system having a telephone directory information
Telephone system having disconnection information outputting fun
Telephone system having land-line-supported private base station
Telephone system providing a talking operation after main power
Telephone using service messages for identification signals
Telephone which enables timely input and presentation of...
Telephone which enables timely input and presentation of...
Telephone whose setting details can be changed, and...
Telephone with automatic switching between cellular and VoIP...
Telephone with dynamically programmable push buttons for...
Telephone with dynamically programmable push buttons for...
Telephone with dynamically programmable push buttons for...
Telephone with dynamically programmable push buttons for...
Telephone, telephone exchange system, storage medium and...
Telephony control in the flight deck
Telephony device comprising a base station and at least a...
Telephony device comprising a base station and at least one...
Telephony device comprising a base station and at least one...
Telephony device comprising a digital processing element for...
Telephony device transmitting divided messages